I don't have a current statistic, but it's generally believed that the majority of women can’t climax through vaginal penetration alone. I've always found that to be a disappointing fact — especially since so many women don't actually learn this until late in their sexual development. I decided to test this notion so I questioned a group of my girlfriends. Many did acknowledge that an orgasm without external stimulation is possible, though quite uncommon. In fact, the number of women who could reach climax without it was more than I expected — around half. So let me ask my loyal DearSugar readers, do you need clitoral stimulation to orgasm?